Dehydration control method of multi-drum washing machine and multi-drum washing machine

Abstract

The invention relates to the technical field of multi-drum washing machines, in particular to a dehydration control method of a multi-drum washing machine and the multi-drum washing machine, and aims to solve the problem that when two or more washing drums of an existing multi-drum washing machine enter a dehydration procedure, dehydration requirements conflict exists between the two or more washing drums. In order to achieve the purpose, the dewatering control method comprises the steps that whether a plurality of washing drums are small drums or not is judged; when the plurality of washing drums are all small drums, the plurality of washing drums are controlled to independently execute dehydration operation; and when at least one of the plurality of washing drums is a large drum, controlling one or a group of washing drums to perform dehydration operation, and stopping the other washing drums or rotating at a low speed or rotating reversely. According to the invention, the dewatering sequence under the condition that the dewatering stages of the plurality of washing drums are overlapped is limited, so that the resonance of the whole machine caused by mutual dewatering conflicts can be avoided, the washing effect is ensured, and the washing efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of multi-drum washing machine technology, specifically providing a spin-drying control method for a multi-drum washing machine and a multi-drum washing machine. Background Technology

[0002] With the continuous improvement of living standards, washing machines have long been a common household appliance, becoming an important part of daily life. As consumers increasingly demand separate washing of clothes and higher washing efficiency, multi-drum washing machines capable of separating clothes for different washing needs have gradually appeared on the market. Multi-drum washing machines typically have two or more washing drums to meet the washing needs of ordinary families.

[0003] When two or more washing drums in a multi-drum washing machine enter the spin-drying cycle, simultaneous spin-drying can cause resonance throughout the machine, leading to increased vibration and excessive power consumption, which can affect the machine's lifespan. If the washing drums do not spin-dry simultaneously, i.e., one drum finishes spinning before the others begin, this prolongs the overall washing and spin-drying time and reduces washing efficiency.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problem, namely, to solve the problem of conflicting dehydration requirements between two or more washing drums in existing multi-drum washing machines when they enter the dehydration program.

[0006] This invention provides a spin-drying control method for a multi-drum washing machine. The washing machine includes multiple interconnected washing drums, each of which includes two large drums and two small drums, or one large drum and two small drums. When the spin-drying stages of the multiple washing drums overlap, the control method includes: determining whether all of the multiple washing drums are small drums; when all of the multiple washing drums are small drums, controlling each of the multiple washing drums to independently perform a spin-drying operation; and / or when at least one of the multiple washing drums is a large drum, controlling one or a group of washing drums to perform a spin-drying operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction.

[0007] In a specific embodiment of the above-mentioned spin-drying control method for a multi-drum washing machine, when the multiple washing drums start spin-drying at different times and the interval is greater than a set threshold, the step of "determining whether the multiple washing drums are all small drums" specifically includes: determining whether the multiple washing drums are all small drums before, simultaneously with, or after the washing drum that starts spin-drying later enters the spin-drying stage; the step of "controlling one or a group of washing drums to perform spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" specifically includes: controlling one or a group of washing drums that started spin-drying first to continue performing spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction.

[0008] In a specific implementation of the above-mentioned spin-drying control method for a multi-drum washing machine, when the spin-drying times of the multiple washing drums are the same or the interval is less than or equal to a set threshold, the step of "controlling one or a group of washing drums to perform spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" specifically includes: detecting the eccentricity value of each washing drum in the previous spin-drying stage; and determining the spin-drying sequence of the multiple washing drums based on the detection results.

[0009] In a specific implementation of the above-mentioned spin-drying control method for a multi-drum washing machine, the step of "determining the spin-drying sequence of the multiple washing drums based on the detection results" specifically includes: when the detection results are any of the following, controlling the multiple washing drums to spin-dry sequentially according to the spin-drying determination conditions; wherein, the detection results are: the eccentricity values ​​of the multiple washing drums are all greater than a preset eccentricity value; or the eccentricity values ​​of the multiple washing drums are all less than a preset eccentricity value; or no eccentricity value is detected in the multiple washing drums; wherein, the spin-drying determination conditions include at least one of: remaining running time and the current spin-drying stage.

[0010] In a specific embodiment of the above-mentioned spin-drying control method for a multi-drum washing machine, the step of "determining the required spin-drying order of the multiple washing drums based on the detection results" further includes: when the eccentricity value of multiple washing drums is less than a preset eccentricity value, and the eccentricity value of other multiple washing drums is greater than the preset eccentricity value, first controlling the multiple washing drums with eccentricity values ​​less than the preset eccentricity value to spin-dry, and then controlling the multiple washing drums with eccentricity values ​​greater than the preset eccentricity value to spin-dry; and / or when no eccentricity value is detected in multiple washing drums, and the eccentricity value of other multiple washing drums is less than the preset eccentricity value, first controlling the multiple washing drums with eccentricity values ​​less than the preset eccentricity value to spin-dry, and then controlling the multiple washing drums without detected eccentricity value to spin-dry; and / or when no eccentricity value is detected in multiple washing drums, and the eccentricity value of other multiple washing drums is greater than the preset eccentricity value, first controlling the multiple washing drums without detected eccentricity value to spin-dry, and then controlling the multiple washing drums with eccentricity values ​​greater than the preset eccentricity value to spin-dry.

[0011] In a specific implementation of the above-mentioned spin-drying control method for a multi-drum washing machine, the step of "controlling the multiple washing drums to spin-dry sequentially according to the spin-drying determination conditions" specifically includes: obtaining the user's washing habits; prioritizing the spin-drying determination conditions according to the user's washing habits; and controlling the washing drums to spin-dry according to the sorted spin-drying determination conditions.

[0012] In a specific implementation of the above-mentioned spin-drying control method for a multi-drum washing machine, the step of "prioritizing the spin-drying determination conditions according to the user's washing habits" specifically includes: if the user's washing habit is single-drum washing, the priority of the spin-drying determination conditions is prioritized as follows: the priority of the remaining running time is higher than the priority of the current spin-drying stage; and / or if the user's washing habit is multi-drum washing, the priority of the spin-drying determination conditions is prioritized as follows: the priority of the current spin-drying stage is higher than the priority of the remaining running time.

[0013] In a specific embodiment of the above-mentioned spin-drying control method for a multi-drum washing machine, the step of determining the spin-drying condition as the remaining running time specifically includes: obtaining the remaining running time of each washing drum; controlling multiple washing drums to spin-dry sequentially in order of increasing remaining running time; and / or, the step of determining the spin-drying condition as the current spin-drying stage specifically includes: obtaining the current spin-drying stage of each washing drum; controlling multiple washing drums to prioritize spin-drying the drum whose current spin-drying stage is not the final spin-drying stage.

[0014] In a specific implementation of the above-mentioned spin-drying control method for a multi-drum washing machine, when the multiple washing drums start spin-drying at the same time or at intervals less than a set threshold, the step of "controlling one or a group of washing drums to perform spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" further includes: controlling each washing drum to spin-dry sequentially according to the user-specified order.

[0015] The present invention also provides a multi-drum washing machine, including a controller configured to perform the spin-drying control method described above.

[0016] When employing the above technical solution, it is determined whether all washing drums are small drums. When all washing drums are small drums, each washing drum is controlled to independently perform the spin-drying operation. When at least one of the washing drums is a large drum, one or a group of washing drums is controlled to perform the spin-drying operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction. This invention limits the spin-drying sequence when the spin-drying stages of multiple washing drums overlap, which avoids spin-drying conflicts between them and causes resonance in the whole machine, ensuring washing effect and improving washing efficiency. Attached Figure Description

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0018] Figure 1(a)-Figure 1(d) This is a schematic diagram of the structure of the multi-drum washing machine of the present invention;

[0019] Figure 2 This is another structural schematic diagram of the multi-drum washing machine of the present invention;

[0020] Figure 3 This is a flowchart of the main steps of the spin-drying control method for a multi-drum washing machine according to the present invention;

[0021] Figure 4 This is a possible complete flowchart of the spin-drying control method for a multi-drum washing machine according to the present invention;

[0022] The components include: 1. Washing machine body; 2. First washing drum; 3. Second washing drum; 4. Third washing drum; 5. Fourth washing drum. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0024] It should be noted that in the description of this invention, terms such as "inner," "outer," "top," "bottom," and "middle," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the relevant devices or elements must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, ordinal numbers such as "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] Furthermore, it should be noted that although the various steps of the control method of the present invention are described in a specific order in the description of the present invention, these orders are not restrictive. Without departing from the basic principles of the present invention, those skilled in the art can perform the steps in different orders.

[0027] First refer to Figure 1(a)-Figure 1(d) This figure is a structural schematic diagram of the multi-drum washing machine of the present invention. (See Figure 1-) Figure 4 As shown, the washing machine includes a first washing drum 2, a second washing drum 3, a third washing drum 4, and a fourth washing drum 5, which are disposed inside the washing machine body 1 and fixedly connected to each other. Each washing drum includes an outer drum and an inner drum. "Connected to each other" means that the outer drums of the multiple washing drums are connected to each other. Among them, the first washing drum 2 and the second washing drum 3 are small drums, and the third washing drum 4 and the fourth washing drum 5 are large drums. It should be noted that the present invention does not impose any restrictions on the position of the washing drums in the washing machine body 1. Those skilled in the art can set them as needed. For example, the first washing drum 2 and the second washing drum 3 can be set at the top (as shown in Figure 1(a)), the bottom (as shown in Figure 1(b)), or the middle (as shown in Figure 1(c) and Figure 1(d)) of the third washing drum 4 and the fourth washing drum 5. In addition, to enhance the stability of the connection structure between the washing drums, when the first washing drum 2 and the second washing drum 3 are set in the middle of the third washing drum 4 and the fourth washing drum 5, in addition to the multiple washing drums being connected in sequence, the third washing drum 4 and the fourth washing drum 5 are also connected to each other (as shown in Figure 1(d)).

[0028] Then refer to Figure 2 This figure is a schematic diagram of another structure of the multi-drum washing machine of the present invention. Figure 2 As shown, the washing machine includes a first washing drum 2, a second washing drum 3, and a third washing drum 4, which are disposed inside the washing machine body 1 and fixedly connected to each other. The first washing drum 2 and the second washing drum 3 are small drums, and the third washing drum 4 is a large drum. It should also be noted that the present invention does not impose any restrictions on the position of the washing drums within the washing machine body 1; those skilled in the art can configure them as needed.

[0029] Then refer to Figure 3 The figure shows a flowchart of the main steps of the spin-drying control method of the multi-drum washing machine of the present invention. Figure 3 As shown, when the dehydration stages of multiple washing drums overlap, the control method of the present invention includes:

[0030] S1, determine whether all washing drums are small drums;

[0031] S2, when multiple washing drums are all small drums, control each of the multiple washing drums to perform the spin-drying operation independently;

[0032] S3, when at least one of the multiple washing drums is a large drum, control one or a group of washing drums to perform the spin-drying operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction.

[0033] In step S2, when the dehydration stages of multiple drums overlap, each drum dehydrates independently. The vibrations generated during dehydration between them do not significantly affect the washing machine, thus improving washing efficiency. For example, as shown in Figure 1 and... Figure 3 As shown, when the dehydration stages of the first washing drum 2 and the second washing drum 3 overlap, they dehydrate independently.

[0034] In step S3, when at least one of the multiple washing drums is a large drum, one or a group of washing drums are controlled to perform a spin-drying operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction. Controlling the other washing drums to rotate at low speed helps balance the vibrations caused by the spin-drying operation, ensuring the overall balance of the washing machine. Controlling the other washing drums to rotate in the opposite direction during the spin-drying operation allows the vibrations caused by the multiple washing drums to cancel each other out inside the washing machine, ensuring the overall balance of the washing machine. For example, as shown in Figure 1, when the spin-drying stages of the first washing drum 2 and the third washing drum 4 overlap, the first washing drum 2 is controlled to perform a spin-drying operation, while the third washing drum 4 stops, rotates at low speed, or rotates in the opposite direction, and vice versa. Continuing as shown in Figure 1, when the dehydration stages of the first washing drum 2, the third washing drum 4, and the fourth washing drum 5 overlap, one of the three drums (1st washing drum 2, 3rd washing drum 4, and 4th washing drum 5) is controlled to perform the dehydration operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction. This process is repeated sequentially until all drums have completed dehydration. Figure 3 As shown, when the dehydration stages of the first washing drum 2, the second washing drum 3, and the third washing drum 4 overlap, the first washing drum 2 and the second washing drum 3 are controlled to perform dehydration operations, while the third washing drum 4 stops, rotates at low speed, or rotates in the opposite direction, and vice versa.

[0035] "Overlapping spin-drying stages of multiple washing drums" specifically refers to situations where multiple washing drums start spin-drying at different times with intervals greater than a set threshold, or multiple washing drums start spin-drying at the same time with intervals less than or equal to the set threshold. The set threshold is the critical time point between low-speed and high-speed rotation of the washing drums during the spin-drying stage. Specifically, at the beginning of the spin-drying stage, the washing drums rotate at low speeds, primarily to evenly distribute the clothes inside. At this point, the rotation speed is very low and does not constitute true spin-drying. "Intervals greater than the set threshold" means that the washing drums that started spin-drying earlier are already rotating at a relatively high speed, making it unsuitable to adjust the spin-drying order. "Intervals less than or equal to the set threshold" means that the washing drums that started spin-drying earlier have not yet reached their rotation speed, allowing for adjustments to the spin-drying order. "Multiple washing drums start spin-drying at the same time" means that multiple washing drums start spin-drying simultaneously with the same rotation speed, also allowing for adjustments to the spin-drying order.

[0036] When multiple washing drums start spinning at different times and the interval is greater than a set threshold, the step S1, "determining whether all the multiple washing drums are small drums," specifically includes: determining whether all the washing drums are small drums before, simultaneously with, or after the washing drum that starts spinning later enters the spinning stage. "After the washing drum that starts spinning later enters the spinning stage" refers to a very short period after the washing drum that starts spinning later begins spinning, during which time the washing drum's rotation speed is very low and has not yet begun to transition to high-speed rotation.

[0037] In step S3, the step of “controlling one or a group of washing drums to perform the dehydration operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction” specifically includes: controlling one or a group of washing drums that started dehydration first to continue performing the dehydration operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction.

[0038] When multiple washing drums start spinning at the same time or at intervals less than or equal to a set threshold: In step S1, "determining whether multiple washing drums are all small drums" specifically includes: determining whether multiple washing drums are all small drums before, simultaneously with, or after multiple washing drums or the washing drum that starts spinning later enters the spinning stage. "After multiple washing drums or the washing drum that starts spinning later enters the spinning stage" refers to a very short period after multiple washing drums or the washing drum that starts spinning later begins spinning, during which time the rotation speed of the washing drum is very low and has not yet begun to transition to high-speed rotation.

[0039] In step S3, the step of "controlling one or a group of washing drums to perform a spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" specifically includes:

[0040] S31, Detect the eccentricity value of each washing drum in the previous spin-drying stage;

[0041] S32, determine the dehydration sequence of the multiple washing drums based on the test results.

[0042] In step S32, the step of "determining the dehydration sequence of the plurality of washing drums based on the detection results" specifically includes:

[0043] S321, when the test result is any of the following, control multiple washing drums to dehydrate sequentially according to the dehydration judgment conditions;

[0044] The test results are as follows:

[0045] The eccentricity values ​​of multiple washing drums are all greater than the preset eccentricity value;

[0046] The eccentricity values ​​of multiple washing drums are all less than the preset eccentricity value;

[0047] No eccentricity was detected in any of the washing drums.

[0048] The criteria for determining dehydration include:

[0049] At least one of the following: remaining running time, current dehydration stage.

[0050] "Remaining runtime" refers to the remaining runtime of the entire washing program. "Current spin cycle" refers to a complete spin cycle within the entire washing program, such as the spin cycle after washing or the spin cycle after rinsing, not individual spin cycles within a single spin cycle, such as low-speed spin cycles or high-speed spin cycles.

[0051] Specifically, the eccentricity value is a parameter that reflects the current eccentricity state of the inner cylinder, such as the specific displacement value of the inner cylinder relative to its initial installation position, the offset angle value of the inner cylinder relative to its axis at the initial installation position, or the change in the distance between multiple points between the inner and outer cylinders. The preset eccentricity value is a corresponding limiting value set when the inner cylinder is not eccentric or the eccentricity is approximately non-existent, which can be used to compare the current position state of the inner cylinder, such as a set displacement value, a set angle value, or a set distance change value. By acquiring the eccentricity value while the inner cylinder rotates and comparing it with the preset eccentricity value, it can be determined whether the current center of gravity position of the inner cylinder has deviated from its center of gravity position under normal installation, thereby determining whether the inner cylinder is eccentric. The eccentricity value can be detected and expressed in various ways. For example, when detected by the current of the drive motor, it can be expressed as the magnitude of the motor current; when detected by a limit switch, it can be expressed as the signal indicating whether the limit switch has been triggered, etc. This invention does not limit its detection method and expression form.

[0052] Furthermore, the step of determining dehydration based on the remaining running time specifically includes:

[0053] Obtain the remaining running time for each washing drum;

[0054] Multiple washing drums are controlled to spin-dry sequentially in order of increasing remaining running time.

[0055] The specific steps for determining the current stage of dehydration include:

[0056] Obtain the current spin-drying stage of each washing drum;

[0057] The system controls multiple washing drums to prioritize the dehydration of the drums that are currently in the non-final dehydration stage.

[0058] Specifically, the aforementioned dehydration determination conditions can be independent of each other when determining the dehydration order of the washing drum. That is, there is no logical relationship between the remaining running time of the washing drum and the current dehydration stage. In practical applications, those skilled in the art can select at least one of these conditions as the determination condition for the dehydration order according to actual needs. For example, when the program's dehydration determination condition is the remaining running time, the washing drum with less remaining running time is dehydrated first; when the program's dehydration determination condition is the current dehydration stage, the washing drum whose previous dehydration stage was not the final dehydration stage is dehydrated first.

[0059] S322, when the eccentricity of multiple washing drums is less than the preset eccentricity value, and the eccentricity of other multiple washing drums is greater than the preset eccentricity value, first control the multiple washing drums with eccentricity values ​​less than the preset eccentricity value to dehydrate, and then control the multiple washing drums with eccentricity values ​​greater than the preset eccentricity value to dehydrate.

[0060] S323, when multiple washing drums do not detect eccentricity and the eccentricity of other multiple washing drums is less than the preset eccentricity, first control the multiple washing drums with eccentricity less than the preset eccentricity to dehydrate, and then control the multiple washing drums with no detected eccentricity to dehydrate.

[0061] S324, when multiple washing drums do not detect eccentricity, and the eccentricity of other multiple washing drums is greater than the preset eccentricity, first control the multiple washing drums that do not detect eccentricity to dehydrate, and then control the multiple washing drums with eccentricity greater than the preset eccentricity to dehydrate.

[0062] In the above steps, "no eccentricity detected" means that the washing drum has not entered the spin-drying stage since the start of washing. For washing drums with an eccentricity value less than the preset eccentricity value, it indicates that the drum's rotation speed can reach high speed during the spin-drying stage, and there will be no increase in washing time due to multiple adjustments to the distribution. For washing drums with an eccentricity value greater than the preset eccentricity value, it indicates that the drum's rotation speed cannot reach high speed during the spin-drying stage, and there will be an increase in washing time due to multiple adjustments to the distribution. Therefore, to ensure spin-drying efficiency, spin-drying of washing drums with eccentricity values ​​less than the preset eccentricity value is prioritized, followed by washing drums with no detected eccentricity value, and finally washing drums with eccentricity values ​​greater than the preset eccentricity value. Furthermore, in step S321, when the detection results of the eccentricity values ​​of each washing drum are within the same range or no eccentricity value is detected, it is impossible to determine which washing drum prioritizes spin-drying based solely on the eccentricity value. It is necessary to determine which washing drum prioritizes spin-drying according to the spin-drying judgment conditions.

[0063] As a preferred implementation, considering users' washing habits and the high efficiency of multi-drum washing, there is also a logical relationship between the above-mentioned dehydration determination conditions. Specifically, in step S321, the step of "controlling the washing drums to dehydrate sequentially according to the dehydration determination conditions" specifically includes:

[0064] S3211, obtains the user's washing habits;

[0065] S3212 prioritizes the dehydration determination conditions based on the user's washing habits;

[0066] S3213 controls the washing drum to dehydrate sequentially according to the sorted dehydration judgment conditions.

[0067] Furthermore, in step S3212, the step of "prioritizing the dehydration determination conditions according to the user's washing habits" specifically includes:

[0068] S32121, If ​​the user's washing habit is single-drum washing, the priority of the dehydration determination conditions is sorted as follows: the priority of the remaining running time is higher than the priority of the current dehydration stage.

[0069] S32122, If the user's washing habit is multi-drum washing, the priority of the spin-drying determination conditions is sorted as follows: the priority of the current spin-drying stage is higher than the priority of the remaining running time.

[0070] Specifically, if a user's washing habit is single-drum washing, the program determines that the user expects to complete the washing cycle of one drum first; that is, the program defaults to completing the washing cycle of multiple drums one by one as the washing standard. Therefore, when the user is washing multiple drums and all drums need to be spun simultaneously, the program first compares the remaining running time of each drum and controls the drums to spin-dry sequentially according to the order of remaining running time from shortest to longest. Furthermore, if multiple drums have the same remaining running time, the program then determines the current spin-drying stage of each drum and prioritizes the spin-drying of the drums that are not in the final spin-drying stage.

[0071] If the user's washing habit is multi-drum washing, the program defaults to using efficiency as the washing standard. Therefore, when the user is performing multi-drum washing and all drums need to be spun simultaneously, the program first determines the current spun-drying stage of each drum and prioritizes drums that are not in the final spun-drying stage. Furthermore, if multiple drums are in the same spun-drying stage (either the final or a non-final stage), the program compares the remaining running time of each drum and controls them to spun sequentially according to their remaining running time, from shortest to longest.

[0072] When multiple washing drums start spinning at the same time or at intervals less than a set threshold, step S3, which involves "controlling one or a group of washing drums to perform the spinning operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction," further includes controlling each washing drum to spin-dry sequentially according to a user-specified order. Specifically, the spinning sequence of each washing drum can be executed sequentially according to the user-specified order, meeting user needs and making it more user-friendly.

[0073] The following reference Figure 4 The figure is a possible complete flowchart of the spin-drying control method of the multi-drum washing machine of the present invention. Figure 4 As shown, when multiple washing drums start spinning at the same time or the interval is less than or equal to a set threshold, the control method of the present invention includes:

[0074] S101, determine whether all washing drums are small drums;

[0075] When multiple washing drums are all small drums, proceed to step S102;

[0076] When at least one of the multiple washing drums is a large drum, proceed to step S103;

[0077] S102 controls multiple washing drums to independently perform spin-drying operations;

[0078] S103, Detect the eccentricity value of each washing drum in the previous spin-drying stage;

[0079] When the eccentricity values ​​of multiple washing drums are all greater than the preset eccentricity value, or the eccentricity values ​​of multiple washing drums are all less than the preset eccentricity value, or no eccentricity value is detected in any of the multiple washing drums, step S104 is executed.

[0080] When the eccentricity value of multiple washing drums is less than the preset eccentricity value, and the eccentricity value of multiple other washing drums is greater than the preset eccentricity value, step S107 is executed.

[0081] When multiple washing drums fail to detect eccentricity, and the eccentricity of multiple other washing drums is less than the preset eccentricity value, step S108 is executed.

[0082] When multiple washing drums fail to detect eccentricity, and the eccentricity of multiple other washing drums exceeds the preset eccentricity value, step S109 is executed.

[0083] S104, Obtain the user's washing habits;

[0084] When the user's washing habit is single-tub washing, proceed to step S105;

[0085] When the user's washing habit is multi-tub washing, proceed to step S106;

[0086] S105, control the washing drum to dehydrate sequentially according to the priority of remaining running time being higher than the priority of the current dehydration stage;

[0087] S106, control the washing drum to dehydrate sequentially according to the dehydration judgment condition that the priority of the current dehydration stage is higher than the priority of the remaining running time;

[0088] S107, first control multiple washing drums with eccentricity values ​​less than the preset eccentricity value to dehydrate, then control multiple washing drums with eccentricity values ​​greater than the preset eccentricity value to dehydrate;

[0089] S108, first control multiple washing drums with eccentricity values ​​less than the preset eccentricity value to dehydrate, then control multiple washing drums with no detected eccentricity value to dehydrate;

[0090] S109, first control multiple washing drums that have not detected eccentricity to dehydrate, then control multiple washing drums with eccentricity values ​​greater than the preset eccentricity value to dehydrate.

[0091] In summary, in the preferred embodiment of the present invention, it is determined whether all washing drums are small drums; when all washing drums are small drums, each washing drum is controlled to independently perform the spin-drying operation; when at least one of the washing drums is a large drum, one or a group of washing drums is controlled to perform the spin-drying operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction. By limiting the spin-drying sequence when the spin-drying stages of multiple washing drums overlap, the present invention can avoid conflicts between the spin-drying stages that could cause resonance in the entire machine, ensuring washing effect and improving washing efficiency.

[0092] Based on the above embodiments, the present invention also provides a multi-drum washing machine, which is configured to perform the above-described spin-drying control method.

[0093] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A method for controlling the spin-drying of a multi-drum washing machine, characterized in that, The washing machine includes multiple washing drums connected to each other, the washing drums comprising two large drums and two small drums, or one large drum and two small drums. When the spin-drying stages of the multiple washing drums overlap, the control method includes: Determine whether all of the multiple washing drums are small drums; When all the washing drums are small drums, each washing drum is controlled to independently perform the dehydration operation; and / or When at least one of the multiple washing drums is a large drum, one or a group of washing drums is controlled to perform a dehydration operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction.

2. The spin-drying control method for a multi-drum washing machine according to claim 1, characterized in that, When the multiple washing drums start dehydration at different times and the interval is greater than a set threshold: The step of "determining whether all of the multiple washing drums are small drums" specifically includes: Before, at the same time as or after the washing drum that starts dehydration enters the dehydration stage, determine whether all of the multiple washing drums are small drums; The steps of "controlling one or a group of washing drums to perform a spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" specifically include: Control one or more washing drums that have started dehydration to continue the dehydration operation, while the other washing drums stop, rotate at low speed, or rotate in the opposite direction.

3. The spin-drying control method for a multi-drum washing machine according to claim 1, characterized in that, When the multiple washing drums start dehydration at the same time or the interval is less than or equal to a set threshold: The steps of "controlling one or a group of washing drums to perform a spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" specifically include: Detect the eccentricity value of each washing drum during the previous spin-drying stage; The dehydration sequence of the multiple washing drums is determined based on the test results.

4. The spin-drying control method for a multi-drum washing machine according to claim 3, characterized in that, The step of "determining the dehydration sequence of the multiple washing drums based on the test results" specifically includes: When the test result is any of the following, the multiple washing drums are controlled to dehydrate sequentially according to the dehydration determination conditions; The detection results are as follows: The eccentricity values ​​of the multiple washing drums are all greater than the preset eccentricity value; or The eccentricity values ​​of the multiple washing drums are all less than the preset eccentricity value; or No eccentricity was detected in any of the multiple washing drums; The dehydration determination criteria include: At least one of the following: remaining running time, current dehydration stage.

5. The spin-drying control method for a multi-drum washing machine according to claim 3, characterized in that, The step of "determining the dehydration sequence of the multiple washing drums based on the test results" further includes: When the eccentricity of multiple washing drums is less than a preset eccentricity value, and the eccentricity of multiple other washing drums is greater than a preset eccentricity value, the washing drums with eccentricity values ​​less than the preset eccentricity value are controlled to dehydrate first, and then the washing drums with eccentricity values ​​greater than the preset eccentricity value are controlled to dehydrate; and / or When multiple washing drums fail to detect eccentricity, and the eccentricity of multiple other washing drums is less than a preset eccentricity value, first control the washing drums with eccentricity values ​​less than the preset eccentricity value to dehydrate, then control the washing drums without detected eccentricity values ​​to dehydrate; and / or When multiple washing drums fail to detect eccentricity, and the eccentricity of multiple other washing drums exceeds the preset eccentricity value, the washing drums that fail to detect eccentricity are dehydrated first, and then the washing drums with eccentricity values ​​exceeding the preset eccentricity value are dehydrated.

6. The spin-drying control method for a multi-drum washing machine according to claim 4, characterized in that, The step of "controlling the multiple washing drums to sequentially dehydrate according to the dehydration determination conditions" specifically includes: Obtain users' washing habits; The dehydration determination conditions are prioritized according to the user's washing habits; The washing drum is controlled to dehydrate according to the sorted dehydration judgment conditions.

7. The spin-drying control method for a multi-drum washing machine according to claim 6, characterized in that, The step of "prioritizing the dehydration determination conditions according to the user's washing habits" specifically includes: If the user's washing habit is single-drum washing, the priority of the spin-drying determination conditions is ranked as follows: the remaining running time has a higher priority than the current spin-drying stage; and / or If the user's washing habit is multi-drum washing, the priority of the spin-drying determination conditions is ranked as follows: the priority of the current spin-drying stage is higher than the priority of the remaining running time.

8. The spin-drying control method for a multi-drum washing machine according to any one of claims 4 to 7, characterized in that, The step of determining the dehydration condition based on the remaining running time specifically includes: Obtain the remaining running time for each washing drum; Controlling multiple washing drums to sequentially dehydrate in ascending order of remaining running time; and / or, the step of determining the dehydration stage based on the current dehydration stage specifically includes: Obtain the current spin-drying stage of each washing drum; Multiple washing drums are controlled to preferentially dehydrate the drums whose current dehydration stage is not the final dehydration stage.

9. The spin-drying control method for a multi-drum washing machine according to claim 1, characterized in that, When the multiple washing drums start dehydration at the same time or the interval is less than a set threshold: The step of "controlling one or a group of washing drums to perform a spin-drying operation, while other washing drums stop, rotate at low speed, or rotate in the opposite direction" also includes: Control each washing drum to spin-dry in the order specified by the user.

10. A multi-drum washing machine, comprising a controller, characterized in that, The controller is configured to perform the dehydration control method according to any one of claims 1 to 9.

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